Liquid chromatography tandem mass spectrometry for detecting various pesticides in plant foods

A technology of liquid chromatography and tandem mass spectrometry, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of complex pretreatment conditions and instrument parameters, low accuracy of experimental results, cumbersome pretreatment of pesticide residues, etc., to achieve optimization Sample pretreatment conditions and instrument parameters, many test items, and the effect of meeting the needs of pesticide testing

Inactive Publication Date: 2018-12-21
厦门鉴科检测技术有限公司
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Problems solved by technology

[0002] my country is a large agricultural country. In order to ensure a good agricultural harvest, the application of agricultural inputs is indispensable in the production process. Pesticides play an irreplaceable role in the comprehensive control of crop diseases and insect pests. However, due to the long-term and large-scale use of pesticides, some properties are relatively Stable, accumulative and chronically toxic chemical components to humans and animals, which accumulate continuo...

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  • Liquid chromatography tandem mass spectrometry for detecting various pesticides in plant foods
  • Liquid chromatography tandem mass spectrometry for detecting various pesticides in plant foods
  • Liquid chromatography tandem mass spectrometry for detecting various pesticides in plant foods

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Embodiment Construction

[0046] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples.

[0047] The invention is a liquid chromatography tandem mass spectrometry method for detecting multiple pesticides in vegetable foods, comprising the following steps:

[0048] Step 1. Parameter setting

[0049] Set the parameters of the liquid chromatography-mass spectrometer, and the conditions of the liquid chromatography are:

[0050] a. Chromatographic column: XBridge HSS T3 2.5μm, 50*2.1mm or equivalent

[0051] b. Mobile phase: acetonitrile + 5mmol / L ammonium acetate (containing 0.1 formic acid) gradient elution

[0052] c. Flow rate: 0.3mL / min

[0053] d. Injection volume: 10μL

[0054] The conditions for mass spectrometry are:

[0055] a. Ion source: electrospray ion source

[0056] b. Scanning method: positive ion scanning

[0057] c. Detection method: multiple reaction monitoring

[0058] d. El...

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Abstract

The invention discloses a liquid chromatography tandem mass spectrometry for detecting various pesticides in plant foods. The method comprises the following steps of parameter setting, test comparison, and qualitative and quantitative determination. After the above steps are adopted, the pretreatment process of pesticide residues in plant foods is simplified, the sample pretreatment conditions andinstrument parameters are optimized, and the experiment efficiency is improved; the interference of a sample matrix is well removed; and the test items are more, 52 kinds of common pesticides can bedetected, and the speed is high, so that the pesticide detection requirements of product export in China are met.

Description

technical field [0001] The invention belongs to the technical field of chromatographic detection and analysis, in particular to a liquid chromatography tandem mass spectrometry method for detecting various pesticides in plant foods Background technique [0002] my country is a large agricultural country. In order to ensure a good agricultural harvest, the application of agricultural inputs is indispensable in the production process. Pesticides play an irreplaceable role in the comprehensive control of crop diseases and insect pests. However, due to the long-term and large-scale use of pesticides, some properties are relatively Stable, accumulative, and chronically toxic chemical components to humans and animals accumulate continuously in animals, plants, and even humans, posing a greater threat to people's lives. [0003] Among the existing methods for the determination of pesticides in plant foods, the pretreatment of pesticide residues is relatively cumbersome, and the samp...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/72G01N30/86
CPCG01N30/02G01N30/7266G01N30/8679G01N2030/027
Inventor 熊刚游青陈儒梅陈高水
Owner 厦门鉴科检测技术有限公司
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